Truck_Under_Water Posted December 22, 2006 Share Posted December 22, 2006 Would this be a legal mod for my Stock Contest entry? Link to comment
Nuhtty Posted December 23, 2006 Share Posted December 23, 2006 Anyone try this in their nanocube? Link to comment
Halligan Posted December 23, 2006 Share Posted December 23, 2006 I did this mod to my two MJ 1200 I was curious as to how much of a difference in flow there was so I took the mj1200 off of my remora and placed a modded mj next to the stock mj and turned them on there was a marked increase in the modded vs the stock mj. I know that this is in no way a scientific comparison but I just wanted to add my .02 Link to comment
Nuhtty Posted December 23, 2006 Share Posted December 23, 2006 My concern would be overdriving the motor and shortening the life of the pump. Or making it a fire hazard all together. Link to comment
Travis Posted December 23, 2006 Author Share Posted December 23, 2006 Actually, there is less pressure on the impeller so it is able to spin faster. Link to comment
Nuhtty Posted December 23, 2006 Share Posted December 23, 2006 Actually, there is less pressure on the impeller so it is able to spin faster. I realize that. Less pressure = more RPM = more friction = more heat = higher chance of motor failing Lets say the pump regularly runs at "idle" speed...now youre trying to rev it and keep it there. Link to comment
Drez Posted January 19, 2007 Share Posted January 19, 2007 Giving this thread a respectful bump as I just did the mod and works great. One other thing is that not only is it extra flow, but tis diffuse flow which for aquarium water movement is much better than direct flow. I would do the mod on a MJ 900-1200 in a nano jsut for that. cheers Link to comment
jon0105 Posted January 22, 2007 Share Posted January 22, 2007 The pump motor itself will not change speed, no way to. Unless you change voltage into the motor with a voltage regulator. The only thing changing speed would be the impeller. The motor would be working the same. Not more. Life span would be based on work done by the motor not impeller. Its a mag driven not direct driven to motor works the same all the time. But, maybe I'm off. Link to comment
jamesnmandy Posted February 22, 2007 Share Posted February 22, 2007 bump for my very favorite kind of mod, fast, easy, cheap, and effective kudos! just FYI, i did it the way Travis showed, drilling the holes and cutting off the output nozzle, but i cut my output nozzle back further like Socalsuperhero did so i got the wider flow path and drilled like 10 to 12 holes instead of just the 6 or 8 shown in Travis' pics... wonderful results, easily doubled the flow in my tank using these two MJ600's Link to comment
SouthernR Posted February 25, 2007 Share Posted February 25, 2007 Did anyone try just modding the inlet side to increase the flow in a pump situation? Did it work? I was thinking of trying it on my mj1200 on my remora skimmer just was curious if it was a waste of time. Link to comment
air_doc28 Posted April 2, 2007 Share Posted April 2, 2007 does anybody have any idea if something like this could work on an aquaclear 30 powerhead? this looks awesome for an MJ though! Link to comment
RBuddha Posted April 2, 2007 Share Posted April 2, 2007 Yes it can work on an aquaclear. Link to comment
Drez Posted June 14, 2007 Share Posted June 14, 2007 Just a note on the long term use of these MJ's with drilled intakes. I did this to 3 MJ 400's and while 2 are now modded with boat props, I still have one from when this thread started so the mod don't seem to impact the life of the pump so far. (Some were concerned). More importantly, I just wanted to note that as the modded pump ages, it becomes increasingly difficult to get the bottom intake cover off for cleaning since you dont have the output nozzle to turn it. On mine I need something to torque it, like a fork handle. Just an FYI. Link to comment
Socalsuperhero Posted June 14, 2007 Share Posted June 14, 2007 Just a note on the long term use of these MJ's with drilled intakes. I did this to 3 MJ 400's and while 2 are now modded with boat props, I still have one from when this thread started so the mod don't seem to impact the life of the pump so far. (Some were concerned). More importantly, I just wanted to note that as the modded pump ages, it becomes increasingly difficult to get the bottom intake cover off for cleaning since you dont have the output nozzle to turn it. On mine I need something to torque it, like a fork handle. Just an FYI. Just want to second Drez. I've had two running for some time now, and run they do, just as they did on day one. Again, the only problem has been the nozzles become difficult to remove. Screwdriver works wonders though, but I haven't really had any reason to take them off. AWESOME MOD! Link to comment
dzhuo Posted July 10, 2007 Share Posted July 10, 2007 Did anyone try just modding the inlet side to increase the flow in a pump situation? Did it work? I was thinking of trying it on my mj1200 on my remora skimmer just was curious if it was a waste of time. anyone try that? Link to comment
jamesnmandy Posted February 27, 2008 Share Posted February 27, 2008 bump for a great mod, looks like it got lost in time, took me about 25 pages of searching to find it, did it to three MJ600's still running and pumping like crazy today perfect example of why it's faster and easier to post a question than to "OMG YOU NOOB USE TEH SEARCH FEETURE" LOL Link to comment
Ryan_H Posted February 27, 2008 Share Posted February 27, 2008 mod works excellently, i think i added at least 30% if not more output to my mj1200s in my 20. word of caution though, these things will turn the water surface into a boiling mess. i go through over 1/2 gallon of evap a day! Link to comment
lanceleaderx Posted February 27, 2008 Share Posted February 27, 2008 DAM i just placed order for max jet mod a few hours ago Link to comment
svvad Posted February 29, 2008 Share Posted February 29, 2008 Thuis mod doesn't replace the maxijet mod at all. The mod of this thread makes the flow wider and makes it feel stronger. The maxijet mod is just crazy and gives you about 2000 GPH. Link to comment
jamesnmandy Posted February 29, 2008 Share Posted February 29, 2008 Thuis mod doesn't replace the maxijet mod at all. The mod of this thread makes the flow wider and makes it feel stronger. The maxijet mod is just crazy and gives you about 2000 GPH. very true, but for free it's a good solution for those that want wider and stronger flow without turning their tank into a sandstorm Link to comment
pattykat99 Posted February 29, 2008 Share Posted February 29, 2008 INGENIUS !! I'm gonna mod my 2 maxijets 600's this weekend!! I love my maxijets but flow has always been an issue. THANKSYA!! Link to comment
jamesnmandy Posted February 29, 2008 Share Posted February 29, 2008 INGENIUS !! I'm gonna mod my 2 maxijets 600's this weekend!! I love my maxijets but flow has always been an issue. THANKSYA!! dont forget you will lose some flow aiming capability, if you have them on a timer they wont always come back on aiming the same direction, just FYI Link to comment
speakeraddict Posted February 29, 2008 Share Posted February 29, 2008 That's a good thing in my book. Going to do my room divider 55 with 4 of them on a wavemaker. Should really break up pattern dead spots while saving money. dantimdad Link to comment
Chris333 Posted February 29, 2008 Share Posted February 29, 2008 Here is a video of the mod: Link to comment
neanderthalman Posted March 4, 2008 Share Posted March 4, 2008 I noted some old old comments regarding pump life, and while ancient, I'd like to properly address them for the sake of anyone trying this mod, with something besides anectodal evidence. You will not reduce the pump life in this instance, and it's pretty simple as to why. Pump current goes down with RPM. Lowering the loading (flow resistance) increases the RPM of the pump, thus, reducing the current draw of the pump below nominal. The component that experiences significant heating, in this case, the stator windings, will be heated less than normal. The bearing surfaces, however, between the the rotor/impeller and shaft, will experience slightly higher heating from friction. However, these same surfaces are constantly cooled by the increased water flow around them, so any temperature increase will be negligible. There will also be a negligible drop in heating in the rotor magnet assembly itself from eddy currents, which would help offset the increased frictional heating from the increased pump speed. Link to comment
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